Coke oven door



Feb. 14, 1939. P. VAN ACKEBEN 2,147,323

COKE OVEN DOOR Filed April 8, 1936 2 Sheeis-Sheet l ,zvenismf Feb. 14, 1939. P. VAN ACKEREN COKE OVEN DOOR Patented Feb. 14, 1939 UNITED STATES PATENT OFFICE assigner, by mesne assignments, to Koppers Company, Pittsburgh, Pa., a corporation of Delaware Application April 8, 1936, Serial No. 73,237 In Germany November 27, 1933 1 Claim. (Cl. 202-248) The invention relates to doors for the coking chambers of horizontal chamber or retort ovens for the production of gas and coke and in particular for doors of this type Which consists of an outer iron door body and reproof brickwork fastened thereto projecting into the coke chamber. y

In the hitherto known doors of the above mentioned type the iron door body consists of heavy uniform cast portions the production of which is difficult and involves considerable expense, Whilst the doors must be specially made for each coke oven battery, as the dimensions of the coking chamber var y within Wide limits.

The main object of my invention consists in providing improvements in the said coke oven doors so that the doors can be easily assembled from cheap materials which are easily available at any time.

The coke oven door forming the subject of my present invention is fundamentally characterised by the fact that the outer iron door plate is formed from a U-shaped Wrought iron section on the sides of which turned towards the chamber cast iron clamps for the bricks of the brick lining are fastened and project into the outer ends of the chamber and carry the reproof brickwork of the door.

My invention further consists in that means, preferably easily disconnected, are provided on the door plate formed of U-shaped section irons in order to provide the door with a permanent so called metal to metal packing. This means according to my invention consists essentially of a framelike cut-out resilient sheet metal plate, clamped against the door plate and which is provided on the edge with a frame having a knifelike edge which in the closed position of the door rests against a corresponding surface of the door frame, and a frame consisting of Z irons, removably xed on the outside of the door, which frame carries the pulling and/or pressure screws which act on the resilient sheet metal plate.

Further characteristics of my invention can be seen from the following description of a preferable form of construction of my invention.

Fig. 1 of the drawings shows a horizontal cross section through a coke oven door constructed according to the invention,

Fig. 2 shows a vertical section through the door according to Fig. 1, and

Fig. 3 shows a front elevation of the door with the door frame.

In Fig. l the oven chamber is indicated at I and is formed of reproof walls 2 in which the usual heating passages 3 are provided. On the front face of the oven, the brickwork is covered with protecting plates 4 which are held against the brickwork by the vertical anchor supports 5. Between the supporting plates 4 and the brickwork 2 a heat insulating material 6 is provided.

Around the opening of the chamber I the supporting plates 4 are constructed in the form of a frame so that as shown at 'I they partly project into the oven chamber.

On the outside a door frame 3 surrounding the door opening is provided on the supporting plates 4. The frame 8 is held against the supporting plates by means of screws 9 which under the action of springs IB act against forked projections II of the door frame 8, and rest on bolts I2 which are iiXed with their heads I3 in corresponding holes in the supporting plates 4. This type of fastening of the door frame of the supporting plates assures the door frame 8 of a definite possibility of movement with respect to the supporting plates 4 so that the door frame can maintain its original form even if the supporting plates 4 move out under the influence of the heat from the inside of the oven.

The coke oven door to be placed in the opening of the door frame has an outer door plate formed of U-shaped section irons I4 which consists of wrought iron. On the sides I5 the section irons I4 turned towards the chamber castiron clamps I 'I are fixed by means of rivets I6 or by any other suitable means, and serve to hold the fireproof brickwork I8 of the oven door which projects into the chamber in the form of a plug. The brickwork I8 rests at its lower part on a bracket II' which is likewise fixed on the section irons I4.

On the side clamps I'I for the brickwork I8 is provided a surrounding projection I9 vwhich when the door is inserted rests on projection 20 of the part 'I of the protecting plates 4. Between the projection I 9 and the door frame there is thus provided the groove 2I which widens towards the outside and in which clay or other suitable packing material can be forced in order to pack the oven door, that is to prevent the exit of distillation gases from the coking chamber. Instead of packing the oven door with clay, which is only permanent to a certain extent as this type of packing has to be renewed with every removal of the door, it is also possible to provide the door as shown in Fig. 1 with a socalled metal to metal packing.

For this purpose there is fixed on the door plate I4 by means of screws 22 and the pressure parts 23 the frame-like resilient sheet metal plate 24 which covers the groove between the door and door frame 8. On the edge the resilient plate 24 carries a frame 25 of T-shaped cross section Whose knife shaped edge lies tightly against a plane packing surface 26 of the door frame when the door is closed.

In order to maintain the frame 25 tightly against the surface 26 over the entire extent of the door frame, tensioning and pressure screws 21 are provided and are arranged on a frame 2B of Z-irons. This frame 28 is supported by cross ties 29 which are supported on outer bracket-like projections 3D of the door plate i4. The frame 25 is to a certain extent resilient. On account of this it is possible by means of suitable adjustment of the tensioning and pressure screws 21, to bring the frame 25 into such a shape that its knife like front edge corresponds accurately to the contour of the surface 2'6 even if the door frame itself is somewhat warped after some time.

In order to prevent condensation of tarry constituents on the resilient sheet metal plate 24 it is provided on the inside with a bad heat conducting packing 3|.

As can be seen from the foregoing the resilient sheet metal frame 24 is fastened so as to be easily removable from the door plate I4. This also applies to the frame 28 carrying the tensioning and pressure screws 21. In this way it is possible as required to provide the door constructed according to the invention with a metal to metal packing or, after removal of the sheet metal plate 24 and the frame 28, to pack it with clay in the known manner.

Cross bars 32 serving to hold the door in the closed position are rotatably disposed on the outer brackets 30 of the door plate I4. The two cross bars 32 are connected with each other by means of a bar 33 so that they may be simultaneously operated. The cross bars 23 when the door is closed engage behind hook shaped projections 34 of the door frame 8.

I have described my invention above with reference to one example of the construction without however limiting the invention to the form of construction shown. My invention may however, be Varied within the scope of the following claim.

I claim:

A composite coke oven door construction composed of a vertically disposed channel-bar, a rim of cast iron brick clamps, pedestal supports for gripping the door by a door handling machine and a lining of refractory re brick, the channel-bar constituting the main load carrying and supporting member of the door and being disposed thereon so as to have its side anges extend inwardly vertically of the door and its Web form an outer central vertical panel for the door, the pedestal supports being secured to the panel on the outside of the door and the rim of clamps being secured to the channel-bar on the inside of the door, the lining of fire brick being set in the channel of the channel-bar within the rim of clamps on the inside of the door so that the weight of the brick lining as well as the clamps therefor is carried by the channel-bar in the open position of the door, and the cast iron clamps of the rim, that are alongside the Vertical sides of the door, being disposed alongside the outer surfaces of the side anges of the channel-bar and constituting the border of the vertical sides of the door, a resilient frame-like sheet metal plate secured to the channel-bar and provided with a metallic knife-edge projection for metal-to-metal sealing of the joint between the door and the coke oven door-frame and a pressure screw carrying frame of rolled angle irons fixed to the pedestals and carrying adjustable pressure elements for pressing the knife-edge projections against a plane surface of the door frame in closed position of the door.

PAUL VAN ACKEREN. 

